10221424420 has 24 divisors (see below), whose sum is σ = 22727638584. Its totient is φ = 3848065536.

The previous prime is 10221424399. The next prime is 10221424441. The reversal of 10221424420 is 2442412201.

It is an interprime number because it is at equal distance from previous prime (10221424399) and next prime (10221424441).

It can be written as a sum of positive squares in 4 ways, for example, as 2308610304 + 7912814116 = 48048^2 + 88954^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10221424391 and 10221424400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15031167 + ... + 15031846.

It is an arithmetic number, because the mean of its divisors is an integer number (946984941).

Almost surely, 2^10221424420 is an apocalyptic number.

10221424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221424420 is an abundant number, since it is smaller than the sum of its proper divisors (12506214164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221424420 is a wasteful number, since it uses less digits than its factorization.

10221424420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30063039 (or 30063037 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 10221424420 its reverse (2442412201), we get a palindrome (12663836621).

The spelling of 10221424420 in words is "ten billion, two hundred twenty-one million, four hundred twenty-four thousand, four hundred twenty".